key_shortcut =  {
bind_keys:
function () {
    $(window).keydown(
        function(event) {
        //global scope
            // toggle side bar
            if (event.keyCode == 120) { // '<F9>'
                global.layout.toggle('west');
                var pix = $('#content-wrap').css('border-left-width') == '1px'?'0px':'1px';
                $('#content-wrap').css('border-left-width', pix);
            }
            // toggle untility bar
            if (event.keyCode == 191) { // '/'
                if (global.options.show_untility_bar) {
                    $('#untility-bar').show();
                    $('#filter-box').focus();
                }else {
                    $('#untility-bar').hide();
                }
                global.options.show_untility_bar =
                    !global.options.show_untility_bar
                return false;
            }

        //notebook-view scope

        //search scope
        });
},
};

